CVE-2023-29409

Extremely large RSA keys in certificate chains can cause a client/server to expend significant CPU time verifying signatures. With fix, the size of RSA keys transmitted during handshakes is restricted to <= 8192 bits. Based on a survey of publicly trusted RSA keys, there are currently only three certificates in circulation with keys larger than this, and all three appear to be test certificates that are not actively deployed. It is possible there are larger keys in use in private PKIs, but we target the web PKI, so causing breakage here in the interests of increasing the default safety of users of crypto/tls seems reasonable.

CVSS v3 5.3 MEDIUM

5.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 3.9 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact LOW

Scope UNCHANGED

References

Link	Resource
https://go.dev/cl/515257	Patch
https://go.dev/issue/61460	Issue Tracking Patch Vendor Advisory
https://groups.google.com/g/golang-announce/c/X0b6CsSAaYI/m/Efv5DbZ9AwAJ	Mailing List Vendor Advisory
https://pkg.go.dev/vuln/GO-2023-1987	Patch Vendor Advisory
https://security.gentoo.org/glsa/202311-09
https://security.netapp.com/advisory/ntap-20230831-0010/

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:golang:go::::::::
	cpe:2.3:a:golang:go::::::::
	cpe:2.3:a:golang:go:1.21.0:rc1::::::
	cpe:2.3:a:golang:go:1.21.0:rc2::::::
	cpe:2.3:a:golang:go:1.21.0:rc3::::::

History

No history.

Information

Published : 2023-08-02 20:15

Updated : 2023-11-25 11:15

NVD link : CVE-2023-29409

Mitre link : CVE-2023-29409

CVE.ORG link : CVE-2023-29409

JSON object : View

Products Affected

golang

go

CWE

CWE-400

Uncontrolled Resource Consumption

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